Frig
ActiveSolanum tuberosum L. · Potato
DANESPO AS, DK - 7323 GIVE
DK
5 records
Diseases
Late blight
Phytophthora infestans
Late blight is a dangerous disease of solanaceous crops caused by an oomycete, which manifests as the appearance of spots on leaves, stems, and tubers. The development of the disease is triggered by high humidity and moderate temperatures, which can lead to significant crop losses.
Mentioned in descriptions 6 798 varieties reference book.
Affected plants develop dirty-brown spots, often accompanied by a whitish mold on the underside of the leaf, while elongated dark-brown spots appear on the stems. Tubers show hard, sunken brown spots, and the internal tissue exhibits a characteristic rust-brown discoloration upon cutting.
Epiphytotics develop under conditions of high air humidity around 90% and alternating warm days with cool nights. The presence of free moisture, such as dew or fog, is a critical factor for rapid spore germination, which allows the infection to spread across the field in 10–15 days.
In breeding, a distinction is made between specific vertical resistance, controlled by R-genes, and field horizontal resistance, which is considered more reliable due to its polygenic nature and ability to slow down pathogen development. Varieties are evaluated using a 9-point scale; however, the resistance level of the foliage does not always coincide with that of the tubers, requiring comprehensive analysis during variety testing.
Breakdown by crop
Potato late blight
1 396
Tomato Late Blight
273
Phytophthora root rot of strawberry
99
Phytophthora Root and Stem Rot of Soybean
61
Phytophthora Root Rot of Alfalfa
41
Phytophthora blight of pepper
41
Apple Phytophthora Rot
24
Phytophthora Root Rot of Raspberry
21
Apple Phytophthora Rot
20
Tomato Late Blight
17
Citrus Phytophthora
17
Plum Phytophthora root rot
15
Phytophthora blight — hybrids between Citrus x aurantium L. x Citrus trifoliata L.
13
Strawberry Phytophthora root rot
13
Phytophthora Root Rot of Blueberry
11
Phytophthora root rot of sweet chestnut
9
Phytophthora blight — Leek
7
Phytophthora root rot of sour cherry
6
Phytophthora root rot of paradise apple
6
Avocado Phytophthora Root Rot
6
Peach Phytophthora Root Rot
5
Phytophthora root rot of Vaccinium
5
Late Blight of Eggplant
4
Phytophthora root rot of Prunus amygdalus x Prunus persica
4
Found in these crops
Varieties that feature this in their description
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Faribault
Protection expiredGlycine max (L.) Merr. · Soybean
THE MINNESOTA AGRICULTURAL EXPERIMENT STATION
IT
4 records
Fabricia
ActiveSolanum tuberosum L. · Potato
Saka Pflanzenzucht GmbH Co KG
DE
7 records
Estebana
ActiveSolanum tuberosum L. · Potato
IPR B.V.
NL
6 records
Favolor
ActiveCapsicum annuum L. · Bell pepper
Clause Vegetable Seeds
FR
5 records
Emeraude
ActiveSolanum tuberosum L. · Potato
JEAN MARC ABHIVEN_
FR
5 records
Earlibrite
ActiveFragaria x ananassa Duchesne ex Rozier · Garden strawberry
UNIVERS. OF FLORIDA
NL
7 records
Ducato
ActiveCapsicum annuum L. · Bell pepper
Vilmorin SA (FR)
FR
4 records
Coquine
ActiveSolanum tuberosum L. · Potato
SICA GROCEP
FR
7 records
Dakar
ActiveCapsicum annuum L. · Bell pepper
ZERAIM GEDERA
ES
4 records
Corsa
ActiveMedicago sativa L. · Alfalfa
GOLDEN WEST SEED RESEARCH Co.
GR
5 records
Cephora
ActiveSolanum tuberosum L. · Potato
SICA GROCEP
FR
6 records
Catimini
ActiveSolanum tuberosum L. · Potato
Germicopa Breeding S.A.S
NL
5 records
Camelai
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan, NL
NL
7 records
Bosco
ActiveCucumis sativus L. · Cucumber
Nunhems, NL
NL
6 records
C 35
ActiveCitrus x insitorum Mabb.
FR
5 records
Belami
ActiveSolanum tuberosum L. · Potato
Station de Recherche du ComitÚ Nord
NL
7 records
Bosco
ActiveSolanum tuberosum L. · Potato
Niederösterreichische Saatbaugenossenschaft reg.Gen.m.b.H.
AT
6 records
Bohemia
ActiveSolanum tuberosum L. · Potato
Vesa Velhartice a.s.
CZ
5 records
Blaue Anneliese
ActiveSolanum tuberosum L. · Potato
Karsten Ellenberg
DE
4 records
Axona
ActiveSolanum tuberosum L. · Potato
SARPO KFT
IE
5 records
Annalisa
ActiveSolanum tuberosum L. · Potato
SICA GROCEP
NL
8 records
Alizee
TerminatedSolanum tuberosum L. · Potato
Station de Recherche du Comite Nord, F-76110
FR
5 records
Aisha
ActiveSolanum tuberosum L. · Potato
IPR B.V.
NL
7 records